[gentoo-commits] repo/gentoo:master commit in: dev-libs/libusb/files/, dev-libs/libusb/

[Sam James]

commit:     057e21919e19feb2fd4d51e2bf18d3c0b4512a61
Author:     Sam James <sam <AT> gentoo <DOT> org>
AuthorDate: Sun Feb 20 22:14:46 2022 +0000
Commit:     Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Sun Feb 20 23:08:37 2022 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=057e2191

dev-libs/libusb: fix build failure with -O3

Upstream patch (not yet merged, but simple enough) which works around
a build failure (false positive) with -O3.

Closes: https://bugs.gentoo.org/832732
Signed-off-by: Sam James <sam <AT> gentoo.org>

 .../files/libusb-1.0.25-fix-O3-warning.patch       | 32 ++++++++++++++++++++++
 dev-libs/libusb/libusb-1.0.25.ebuild               |  4 +++
 2 files changed, 36 insertions(+)

diff --git a/dev-libs/libusb/files/libusb-1.0.25-fix-O3-warning.patch b/dev-libs/libusb/files/libusb-1.0.25-fix-O3-warning.patch
new file mode 100644
index 000000000000..7270b057d172
--- /dev/null
+++ b/dev-libs/libusb/files/libusb-1.0.25-fix-O3-warning.patch
@@ -0,0 +1,32 @@
+https://github.com/libusb/libusb/pull/1062
+https://github.com/libusb/libusb/issues/1063
+https://bugs.gentoo.org/832732
+
+From 8bb81fe72286cdcb782c7af4f0d7ef715b2e137c Mon Sep 17 00:00:00 2001
+From: Yegor Yefremov <yegorslists@××××××××××.com>
+Date: Sun, 6 Feb 2022 07:12:14 +0100
+Subject: [PATCH] linux_usbfs: fix maybe-uninitialized error
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Initialize active_config to an invalid value to avoid the following
+compilation error:
+
+os/linux_usbfs.c: In function ‘op_get_configuration’:
+os/linux_usbfs.c:1452:12: error: ‘active_config’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
+ 1452 |  *config = (uint8_t)active_config;
+
+Signed-off-by: Yegor Yefremov <yegorslists@××××××××××.com>
+--- a/libusb/os/linux_usbfs.c
++++ b/libusb/os/linux_usbfs.c
+@@ -1429,7 +1429,7 @@ static int op_get_configuration(struct libusb_device_handle *handle,
+ 	uint8_t *config)
+ {
+ 	struct linux_device_priv *priv = usbi_get_device_priv(handle->dev);
+-	int active_config;
++	int active_config = -1; /* to please compiler */
+ 	int r;
+ 
+ 	if (priv->sysfs_dir) {
+

diff --git a/dev-libs/libusb/libusb-1.0.25.ebuild b/dev-libs/libusb/libusb-1.0.25.ebuild
index 328fa227b1de..71c8364d0b70 100644
--- a/dev-libs/libusb/libusb-1.0.25.ebuild
+++ b/dev-libs/libusb/libusb-1.0.25.ebuild
@@ -21,6 +21,10 @@ DEPEND="${RDEPEND}
 	!udev? ( virtual/os-headers )"
 BDEPEND="doc? ( app-doc/doxygen )"
 
+PATCHES=(
+	"${FILESDIR}"/${P}-fix-O3-warning.patch
+)
+
 multilib_src_configure() {
 	local myeconfargs=(
 		$(use_enable static-libs static)